The value must be a UTF-8 encoded string with a length limit of 128
characters, and match the pattern: [a-zA-Z][a-zA-Z0-9_]*. For example,
id0LikeThis or ID_1_LIKE_THIS. Otherwise, an INVALID_ARGUMENT error is
returned.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-04-17 UTC."],[[["The `Promotion` class in the Retail v2 API provides information about a specific promotion and is accessible within the `Google.Cloud.Retail.V2` namespace."],["The latest version of the API documentation for this class is `2.12.0`, with previous versions available down to `1.0.0`, accessible via links."],["The `Promotion` class inherits from `object` and implements `IMessage`, `IEquatable`, `IDeepCloneable`, and `IBufferMessage` interfaces, providing various methods and capabilities."],["The `Promotion` class includes a `PromotionId` property, which is a string used to identify the promotion, and it has specific constraints such as UTF-8 encoding and a length limit of 128 characters, while also being related to Google Merchant Center's promotion property."],["The documentation lists two constructors for the `Promotion` class: one default constructor `Promotion()` and one that takes a `Promotion` object as parameter `Promotion(Promotion other)`."]]],[]]
